1 /*
2  * Author: Alexander Komarov <alexander.komarov@intel.com>
3  * Copyright (c) 2014 Intel Corporation.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be
14  * included in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  */
24 #pragma once
25 
26 #include <string>
27 #include <mraa/gpio.h>
28 #include <mraa/aio.h>
29 #include <pthread.h>
30 
31 namespace upm {
32 
33 #define LOL_X 14
34 #define LOL_Y 9
35 
36 /**
37  * @brief Olimex LoL Array library
38  * @defgroup lol libupm-lol
39  * @ingroup adafruit gpio display
40  */
41 
42 /**
43  * @library lol
44  * @sensor lol
45  * @comname Olimex LoL Array
46  * @type display
47  * @man adafruit
48  * @con gpio
49  *
50  * @brief API for the Olimex LoL array
51  *
52  * This module defines the LoL API and implementation for a simple framebuffer.
53  *
54  * @image html lolshield.jpg
55  * @snippet lol-example.cxx Interesting
56  */
57 class LoL {
58     public:
59         /**
60          * Instantiates an LoL object
61          * singleton
62          */
63         LoL();
64 
65         /**
66          * LoL object destructor
67          */
68         ~LoL();
69 
70         /**
71          * Gets a framebuffer pointer
72          * @return 0 if successful
73          */
74         unsigned char *getFramebuffer();
75 
76         /**
77          * Gets a pixel at specified coordinates
78          * @param x Coordinate x
79          * @param y Coordinate y
80          * @return 1 if the pixel is on, 0 if off, -1 on error
81          */
82         unsigned char getPixel(int x, int y);
83 
84         /**
85          * Sets a pixel at specified coordinates
86          * @param x Coordinate x
87          * @param y Coordinate y
88          * @param pixel 0 is off, 1 is on
89          * @return 0 if successful, -1 on error
90          */
91         unsigned char setPixel(int x, int y, unsigned char pixel);
92 
93     private:
94         mraa_gpio_context m_LoLCtx[14];
95         unsigned char framebuffer[LOL_X*LOL_Y];
96         pthread_t drawer_thread;
97 };
98 };
99 
100